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检索条件"任意字段=Proceedings of the 17th ACM symposium on Access Control Models and Technologies"

共 381 条记录，以下是81-90 订阅

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SCIFFS: Enabling Secure third-Party Security Analytics using Serverless Computing 21

SCIFFS: Enabling Secure Third-Party Security Analytics using...

引用

26th acm symposium on access control models and technologies (SacmAT)

作者： Polinsky, Isaac Datta, Pubali Bates, Adam Enck, William N Carolina State Univ Raleigh NC 27695 USA Univ Illinois Champaign IL USA

ISBN: (纸本)9781450383653

third-party security analytics allow companies to outsource threat monitoring tasks to teams of experts and avoid the costs of in-house security operations centers. By analyzing telemetry data from many clients these services are able to offer enhanced insights, identifying global trends and spotting threats before they reach most customers. Unfortunately, the aggregation that drives these insights simultaneously risks exposing sensitive client data if it is not properly sanitized and tracked. In this work, we present SCIFFS, an automated information flow monitoring framework for preventing sensitive data exposure in third-party security analytics platforms. SCIFFS performs decentralized information flow control over customer data in a serverless setting, leveraging the innate polyinstantiated nature of serverless functions to assure precise and lightweight tracking of data flows. Evaluating SCIFFS against a proof-of-concept security analytics framework on the widely-used OpenFaaS platform, we demonstrate that our solution supports common analyst workflows (data ingestion, custom dashboards, threat hunting) while imposing just 3.87% runtime overhead on event ingestion and the overhead on aggregation queries grows linearly with the number of records in the database (e.g., 18.75% for 50,000 records and 104.27% for 500,000 records) as compared to an insecure baseline. thus, SCIFFS not only establishes a privacy-respecting model for third-party security analytics, but also highlights the opportunities for security-sensitive applications in the serverless computing model.

关键词： Serverless Computing Security Analytics Decentralized Information Flow control

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Information System applied in Construction Quality control: A Mapping Study 2021

Information System applied in Construction Quality Control: ...

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17th Brazilian symposium on Information Systems: Intelligent and Ubiquitous Information Systems: New Challenges and Opportunities, SBSI 2021

作者： Souza, Leander De Barros Junior, Giuseppe Miceli Choren, Ricardo Instituto Militar de Engenharia RJ Rio de Janeiro Brazil

ISBN: (纸本)9781450384919

Civil construction has increasingly invested in techniques for quality assurance and control. Service inspection is a key activity in the quality control process and executed by specialized professionals in order to register the quality of services. through these inspections, it is possible to detect faults during construction. To get an overview of the approaches/techniques of information systems that have been used to support the inspection activity, a systematic mapping of the literature has been done. the literature mapping indicates the use of information systems to collect inspection data, mainly using technologies such as laser scanner, augmented reality, internal positioning and forms. Some works also use previous construction models, generated using BIM and 3D CAD models,to aid the inspection activity. Result analysis indicates that there are signs of immaturity within there search area, and it is recommended that existing systems are complemented with inspection issues tracking and quality control history features. © 2021 acm.

关键词： Information systems

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Declarative access control for Aggregations of Multiple Ownership Data 20

Declarative Access Control for Aggregations of Multiple Owne...

引用

25th acm symposium on access control models and technologies (SacmAT)

作者： Rosa, Marco Di Cerbo, Francesco Lozoya, Rocio Cabrera SAP Secur Res Sophia Antipolis France Univ Bergamo Sophia Antipolis France

ISBN: (纸本)9781450375689

Data aggregation operations are popular in domains like data analytics, machine learning and artificial intelligence. However, despite the availability of information, situations like fragmented ownership and legal frameworks hinder data processing, requiring companies to design complex human-driven processes in order to gather, aggregate, and process data in a compliant way. Our proposal addresses this lack of automation with an access control mechanism extending XacmL, an access control standard with language and implementation, to regulate operations with multiple data policies.

关键词： access control Data Aggregation Authorization Policies

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Deploying access control Enforcement for IoT in the Cloud-Edge Continuum with the help of the CAP theorem 20

Deploying Access Control Enforcement for IoT in the Cloud-Ed...

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25th acm symposium on access control models and technologies (SacmAT)

作者： Ahmad, Tahir Morelli, Umberto Ranise, Silvio FBK ICT Secur & Trust Unit Trento Italy Univ Genoa DIBRIS Genoa Italy

ISBN: (纸本)9781450375689

the CAP theorem is used by distributed system practitioners to investigate the necessary trade-offs in the design and development of distributed systems, mainly databases and web applications. In this paper, we use it to reason about access control systems designed for the Internet of things (IoT). We validate our approach by experimentally investigating alternative architectural designs to enforce access control in a smart lock system using the cloud-edge IoT platform offered by Amazon Web Services. We discuss the trade-off between security and performance that may help IoT designers choose the most suitable architecture supporting their requirements.

关键词： access control Internet of things CAP theorem

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Active Learning of Relationship-Based access control Policies 20

Active Learning of Relationship-Based Access Control Policie...

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25th acm symposium on access control models and technologies (SacmAT)

作者： Iyer, Padmavathi Masoumzadeh, Amirreza SUNY Albany Albany NY 12222 USA

ISBN: (纸本)9781450375689

Understanding access control policies is essential in understanding the security behavior of systems. However, often times, a complete and accurate specification of the enforced access control policy in a system is not available. In fact, scale and complexity of a system, or unavailability of its source code, may prevent users and even its developers from having access to such accurate specification. In this paper, we propose a novel, systematic approach for learning access control policies where target systems are treated as black boxes. In particular, we show how we can construct a deterministic finite automaton (DFA) characterizing the relationship-based access control (ReBAC) policy of a system by interacting with its access control engine using minimal number of access requests. Our experiments on realistic application scenarios and their promising results demonstrate the feasibility, scalability and efficiency of our learning approach.

关键词： relationship-based access control authorization black box model learning active learning

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Integrated control Addressing Circuits for a Surface Code Quantum Computer in Silicon 22

Integrated Control Addressing Circuits for a Surface Code Qu...

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proceedings of the 17th acm International symposium on Nanoscale Architectures

作者： Rubaya Absar Zach D. Merino Hazem Elgabra Xuesong Chen Jonathan Baugh Lan Wei Electrical and Computer Engineering University of Waterloo Waterloo Ontario Canada Institute for quantum computing University of Waterloo Waterloo Ontario Canada

ISBN: (纸本)9781450399388

Quantum computers require a coordinated operation on a large number of quantum bits (qubits), presenting considerable obstacles such as system integration on a large scale, individual qubits control with precision, and significant error correction overhead. Silicon (Si) quantum dot (QD) spin qubits paired with CMOS control circuits promise a scalable solution due to its potential for large-scale integration utilizing well-established semiconductor technologies. this paper proposes a control addressing scheme for QD spin qubits operating on a node network architecture. Compared to the typical 2-dimensional array architecture, this approach considerably lowers the area constraint for control signal routing. Scalable circuits are designed to route the control signals for local and global operations of a surface code quantum error correction through the modular design of tiered switches controlled by demultiplexers. the proposed method is a critical step toward implementing scalable solid-state quantum processors.

关键词： electron spin qubits quantum dots CMOS addressing circuits

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Accept - Maybe - Decline: Introducing Partial Consent for the Permission-based access control Model of Android 20

Accept - Maybe - Decline: Introducing Partial Consent for th...

引用

25th acm symposium on access control models and technologies (SacmAT)

作者： Momen, Nurul Bock, Sven Fritsch, Lothar Karlstad Univ Karlstad Sweden Tech Univ Berlin Berlin Germany

ISBN: (纸本)9781450375689

the consent to personal data sharing is an integral part of modern access control models on smart devices. this paper examines the possibility of registering conditional consent which could potentially increase trust in data sharing. We introduce an indecisive state of consenting to policies that will enable consumers to evaluate data services before fully committing to their data sharing policies. We address technical, regulatory, social, individual and economic perspectives for inclusion of partial consent within an access control mechanism. then, we look into the possibilities to integrate it within the access control model of Android by introducing an additional button in the interface-Maybe. this article also presents a design for such implementation and demonstrates feasibility by showcasing a prototype built on Android platform. Our effort is exploratory and aims to shed light on the probable research direction.

关键词： Partial consent access control Privacy Data protection

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A Decision Tree Learning Approach for Mining Relationship-Based access control Policies 20

A Decision Tree Learning Approach for Mining Relationship-Ba...

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25th acm symposium on access control models and technologies (SacmAT)

作者： Bui, thang Stoller, Scott D. SUNY Stony Brook Stony Brook NY 11794 USA

ISBN: (纸本)9781450375689

Relationship-based access control (ReBAC) provides a high level of expressiveness and flexibility that promotes security and information sharing, by allowing policies to be expressed in terms of chains of relationships between entities. ReBAC policy mining algorithms have the potential to significantly reduce the cost of migration from legacy access control systems to ReBAC, by partially automating the development of a ReBAC policy. this paper presents new algorithms, called DTRM (Decision Tree ReBAC Miner) and DTRM-, based on decision trees, for mining ReBAC policies from access control lists (ACLs) and information about entities. Compared to state-of-the-art ReBAC mining algorithms, our algorithms are significantly faster, achieve comparable policy quality, and can mine policies in a richer language.

关键词： security policy mining attribute-based access control relationship-based access control decision trees

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AQUA: An Efficient Solver for the User Authorization Query Problem 20

AQUA: An Efficient Solver for the User Authorization Query P...

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25th acm symposium on access control models and technologies (SacmAT)

作者： Armando, Alessandro Gazzarata, Giorgia A. Turkmen, Fatih Univ Genoa DIBRIS Genoa Italy Univ Groningen Groningen Netherlands

ISBN: (纸本)9781450375689

We present AQUA, a solver for the User Authorization Query (UAQ) problem in Role-Based access control (RBAC). the UAQ problem amounts to determining a set of roles granting a given set of permissions, satisfying a collection of authorisation constraints (most notably Dynamic Mutually-Exclusive Roles, DMER) and achieving some optimization objective, i.e. seeking min/max/any number of roles to activate and/or permissions to grant. AQUA supports the enforcement of a wide class of DMER constraints as well as several types of optimization objectives (namely, min/max/any number of roles to activate, min/max/any number of permissions to grant, and a combinations thereof). In this paper, we demonstrate the use of AQUA over a running example while providing certain implementation details including the architecture.

关键词： maxsat access control uaq sat rbac

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Matrix Decomposition: Analysis of an access control Approach on Transaction-based DAGs without Finality 20

Matrix Decomposition: Analysis of an Access Control Approach...

引用

25th acm symposium on access control models and technologies (SacmAT)

作者： Jacob, Florian Becker, Luca Grashoefer, Jan Hartenstein, Hannes Karlsruhe Inst Technol Inst Telemat Karlsruhe Germany

ISBN: (纸本)9781450375689

the Matrix message-oriented middleware(1) is gaining momentum as a basis for a decentralized, secure messaging system as shown, for example, by its deployment within the French government and by the Mozilla foundation. thus, understanding the corresponding access control approach is important. this paper provides an abstraction and an analysis of the access control approach followed by Matrix. We show that Matrix can be seen as a form of Distributed Ledger Technology (DLT) based on Transaction-based Directed Acyclic Graphs (TDAGs). TDAGs connect individual transactions to form a DAG, instead of collecting transactions in blocks as in blockchains. these TDAGs only provide causal order, eventual consistency, and no finality. However, unlike conventional DLTs, Matrix does not aim for a strict system-wide consensus. thus, there is also no guarantee for a strict consensus on access rights. By decomposition of the Matrix approach, we show that a sound decentralized access control can be implemented for TDAGs in general, and for Matrix in particular, despite those weak guarantees. In addition, we discovered security issues in popular implementations and emphasize the need for a formal verification of the employed conflict resolution mechanism.

关键词： publish-subscribe decentralized distributed ledger technology policy information matrix transaction-based directed acyclic graphs access control

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